CVE-2025-6709 | Pre-Authentication Denial of Service Vulnerability in MongoDB Server's OIDC Authentication

The MongoDB Server is susceptible to a denial of service vulnerability due to improper handling of specific date values in JSON input when using OIDC authentication. This can be reproduced using the mongo shell to send a malicious JSON payload leading to an invariant failure and server crash. This issue affects MongoDB Server v7.0 versions prior to 7.0.17 and MongoDB Server v8.0 versions prior to 8.0.5. The same issue affects MongoDB Server v6.0 versions prior to 6.0.21, but an attacker can only induce denial of service after authenticating.

Published: 2025-06-26 Last update: 2025-09-15 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-6709 is rated Moderate Risk (52.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.43%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-6709

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-22 0.15% 0.43% +0.27%
2 2025-12-04 0.14% 0.15% +0.01%
3 2025-11-22 — 0.14% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-6709

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-6709

OS Trackers for CVE-2025-6709

vendor priority summary link
ubuntu medium CVE-2025-6709 medium priority: Ubuntu including 1 source packages (mongodb), 10 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 5, deferred 4, released 1. https://ubuntu.com/security/CVE-2025-6709

Affected software / configurations for CVE-2025-6709

Vendor Product Version Raw CPE
mongodb mongodb >= 6.0.0, < 6.0.21 cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
mongodb mongodb >= 7.0.0, < 7.0.17 cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
mongodb mongodb >= 8.0.0, < 8.0.5 cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*

References for CVE-2025-6709

URL Tags
https://jira.mongodb.org/browse/SERVER-106748 Issue Tracking Vendor Advisory
cvelogic Threat Intelligence